ASTM B 787/B 787M 连续绝缘用19股金属线组合单层绞线铜导线标准规范
日期:2012-02-08 10:04
ASTM B 787/B 787M Standard Specification for 19 Wire Combination Unilay-Stranded Copper Conductors for Subsequent Insulation
ASTM B 787/B 787M连续绝缘用19股金属线组合单层绞线铜导线标准规范
This specification covers electrical contact alloys with the nominal composition of 75% silver, 24.5% copper, and 0.5% nickel in the form of rods, wires, strips, and sheets. Raw materials shall be of such quality and purity that the products, which shall be finished by such operations as cold working, heat tre
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